19987992

素因数分解:

$2^3\times 3^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 59371200

約数和(自身を除く): 39383208

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 37, 41, 54, 61, 72, 74, 82, 108, 111, 122, 123, 148, 164, 183, 216, 222, 244, 246, 296, 328, 333, 366, 369, 444, 488, 492, 549, 666, 732, 738, 888, 984, 999, 1098, 1107, 1332, 1464, 1476, 1517, 1647, 1998, 2196, 2214, 2257, 2501, 2664, 2952, 3034, 3294, 3996, 4392, 4428, 4514, 4551, 5002, 6068, 6588, 6771, 7503, 7992, 8856, 9028, 9102, 10004, 12136, 13176, 13542, 13653, 15006, 18056, 18204, 20008, 20313, 22509, 27084, 27306, 30012, 36408, 40626, 40959, 45018, 54168, 54612, 60024, 60939, 67527, 81252, 81918, 90036, 92537, 109224, 121878, 135054, 162504, 163836, 180072, 185074, 243756, 270108, 277611, 327672, 370148, 487512, 540216, 555222, 740296, 832833, 1110444, 1665666, 2220888, 2498499, 3331332, 4996998, 6662664, 9993996, 19987992]

約数ペア:

[(1, 19987992), (2, 9993996), (3, 6662664), (4, 4996998), (6, 3331332), (8, 2498499), (9, 2220888), (12, 1665666), (18, 1110444), (24, 832833), (27, 740296), (36, 555222), (37, 540216), (41, 487512), (54, 370148), (61, 327672), (72, 277611), (74, 270108), (82, 243756), (108, 185074), (111, 180072), (122, 163836), (123, 162504), (148, 135054), (164, 121878), (183, 109224), (216, 92537), (222, 90036), (244, 81918), (246, 81252), (296, 67527), (328, 60939), (333, 60024), (366, 54612), (369, 54168), (444, 45018), (488, 40959), (492, 40626), (549, 36408), (666, 30012), (732, 27306), (738, 27084), (888, 22509), (984, 20313), (999, 20008), (1098, 18204), (1107, 18056), (1332, 15006), (1464, 13653), (1476, 13542), (1517, 13176), (1647, 12136), (1998, 10004), (2196, 9102), (2214, 9028), (2257, 8856), (2501, 7992), (2664, 7503), (2952, 6771), (3034, 6588), (3294, 6068), (3996, 5002), (4392, 4551), (4428, 4514)]